Q: What are the prime factors of the number 764,703,168?

 A: 2, 3, 991, 4019

Why are those the prime factors of the number 764,703,168?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 764,703,168

764,703,168
Factor Arrows
2382,351,584
Factor Arrows
2191,175,792
Factor Arrows
295,587,896
Factor Arrows
247,793,948
Factor Arrows
223,896,974
Factor Arrows
211,948,487
Factor Arrows
33,982,829
Factor Arrows
9914,019

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 991, 4019

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 991 x 4,019 = 764,703,168

This can also be written as 26 x 31 x 9911 x 4,0191 = 764,703,168

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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